Title :
Generation of N00N State With Orbital Angular Momentum in a Twisted Nonlinear Photonic Crystal
Author :
Yang Ming ; Jie Tang ; Zhao-xian Chen ; Fei Xu ; Li-jian Zhang ; Yan-qing Lu
Author_Institution :
Nat. Lab. of Solid State Microstructures, Nanjing Univ., Nanjing, China
Abstract :
We investigate wavefront engineering of photon pairs generated through spontaneous parametric down conversion in lithium niobate-based nonlinear photonic crystals (NPCs). Due to the complexity of domain structures, it is more convenient to describe photon interaction based on the nonlinear Huygens-Fresnel principle than conventional quasiphase matching regime. Analytical expressions are obtained to describe the transverse properties of down-converted photon states. The convenience of domain engineering in LiNbO3 crystals provides a potential platform for flexible wavefront manipulation of multiphoton states. The generation of N00N state with orbital angular momentum in a twisted NPC is studied utilizing this method. The obtained state is of great value in quantum cryptography, metrology, and lithography applications.
Keywords :
adaptive optics; angular momentum; domain boundaries; lithium compounds; multiphoton processes; optical materials; optical phase matching; photonic crystals; quantum optics; LiNbO3; N00N state generation; NPC; domain structures; multiphoton states; nonlinear Huygens-Fresnel principle; orbital angular momentum; quasiphase matching; spontaneous parametric down conversion; twisted nonlinear photonic crystal; wavefront engineering; Crystals; Equations; Interference; Lithium niobate; Nonlinear optics; Photonic crystals; Photonics; N00N state; nonlinear photonic crystal; spontaneous parametric down-conversion; wavefront engineering;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2014.2382977
